SegWit vs Native SegWit: Understanding Different Types of Bitcoin Addresses

Bitcoin Address Types

This section provides an introduction to the three types of bitcoin addresses - legacy, segwit, and native segwit. It explains their compatibility and functionality.

Legacy Address

• Legacy address is the original style of the bitcoin network.

• It is not segwit compatible, meaning it cannot receive BTC from other address formats including segwit and native segwit.

SegWit Address

• SegWit (Segregated Witness) enables non-native segwit transactions.

• It starts with the number 3 and has more functionality than a legacy address.

• It uses a p2sh script function, often used for multisig addresses.

• Users can transfer their BTC from a legacy to a segwit address as a normal transfer.

Native SegWit Address

• Native segwit (Bech32) is an upgraded version of the segwit update.

• It starts with "bc1" and is supported by major software and hardware wallets.

• Only a few exchanges support native segwit addresses for receiving BTC.

• Transaction costs with native segwit are typically cheaper.

What is a Bitcoin Address?

This section explains what a bitcoin address is and how it functions as the destination or source of a bitcoin payment.

Definition of Bitcoin Address

• A bitcoin address is represented by a unique string of letters and numbers on the internet.

• It serves as the destination or source of a bitcoin payment, similar to sending funds to a bank account.

Creating Bitcoin Addresses

• Bitcoin addresses can be created by downloading a bitcoin wallet that allows users to send, receive, and store bitcoins on the network.

• Wallets also record private keys associated with these addresses.

Why Three Types of Bitcoin Addresses?

This section explains the need for three types of bitcoin addresses and how they were introduced to address scalability issues.

Legacy Address in Neolithic Age

• Initially, only legacy addresses (b2pkh) were available.

• In 2016 and 2017, the debate around bitcoin's block size led to scalability concerns.

Introduction of SegWit

• To address scalability issues, segwit (segregated witness) was proposed as a solution.

• Segwit separates transaction data from signature data, reducing space requirements.

• It increases the 1 MB limit for block sizes to close to 4 MB.

Types of Bitcoin Addresses

This section provides detailed information about each type of bitcoin address - legacy, segwit, and native segwit.

Legacy Address

• Legacy addresses use a special script hash function called p2pkh.

• They start with the number 1 and are not compatible with segwit or native segwit addresses.

SegWit Address

• SegWit addresses start with the number 3.

• They have more functionality than legacy addresses and can enable non-native segwit transactions through p2wpkh in p2sh.

Native SegWit Address

• Native segwit (Bech32) addresses start with "bc1".

• They are supported by major software and hardware wallets but only a few exchanges support them for receiving BTC.

Wallet Support for Bitcoin Addresses

This section discusses wallet support for different types of bitcoin addresses.

Compatibility between Address Types

• All three types of bitcoin addresses are compatible with each other.

• Users can send or receive bitcoins from one address type to another depending on wallet support.

Conclusion

Bitcoin has three types of addresses - legacy, segwit, and native segwit. Legacy addresses are the original style but not compatible with segwit or native segwit. SegWit addresses have more functionality and enable non-native segwit transactions. Native segwit addresses are an upgraded version and offer cheaper transaction costs. Wallet support determines the ability to send or receive bitcoins between different address types.

New Section Bitcoin Address Formats

This section discusses the different bitcoin address formats and their advantages.

Legacy Users vs SegWit Addresses

• Legacy users pay higher fees compared to SegWit users.

• SegWit addresses have larger block capacity, allowing for faster transactions.

• SegWit removes signatures from transaction data, making it tamper-proof.

Native SegWit vs SegWit Addresses

• Native SegWit is the latest development in bitcoin address formats.

• Transactions with a native SegWit address are cheaper than those with a regular SegWit address.

• Native SegWit offers a bigger block size, resulting in lower transaction fees.

Choosing the Right Address Format

• There are three different kinds of bitcoin addresses: legacy, regular SegWit, and native SegWit.

• The choice of address format depends on wallet support and personal preference.

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